[THIN] Re: HyperThreading

From: "Tim Mangan" <tmangan@xxxxxxxxxxxx>

To: <thin@xxxxxxxxxxxxx>

Date: Fri, 4 Apr 2003 14:28:36 -0500

me thinks you are too kind. Intel deserves some "credit" for this mistake.
tim
-----Original Message-----
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx]On
Behalf Of Ron Oglesby
Sent: Friday, April 04, 2003 11:42 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: HyperThreading
>From what I hear they are seeing some processes go into black holes.=20
I mean Hyperthreading is really trying to take something that the OS
does poorly (task scheduling) and make up for it at the hardware level.=20
By creating more logical processors to schedule and bounce the tasks
around. OF course under some load they think tasks are being delayed due
to some conflict between what the OS is sending and expecting and what
is being done at the processor level.
Remember Hyperthreading was an after thought with win2k it wasn't built
for it.
Ron Oglesby
Senior Technical Architect
=20
RapidApp
Office 312.372.7188
Mobile 312.961.2380
email roglesby@xxxxxxxxxxxx
=20
-----Original Message-----
From: James Forbis [mailto:james@xxxxxxxx]=20
Sent: Friday, April 04, 2003 10:42 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: HyperThreading
What bad happens when you have it turned on. I have about 7 or 8 Dell
2650's with Dual Xeon 2.8 and everything seems to run ok including SQL
and exchange.=3D20
James Forbis
-----Original Message-----
From: Ron Oglesby [mailto:roglesby@xxxxxxxxxxxx]=3D20
Sent: Friday, April 04, 2003 11:15 AM
To: thin@xxxxxxxxxxxxx
Cc: Windows2000@xxxxxxxxxxxxx
Subject: [THIN] Re: HyperThreading
I have been using it some... BUT only for some testing. Didn't see a
HUGE improvement from it on 2k, But haven't tried it yet on my 2003
boxes.
On the other hand I wont put it in production on 2k simply because I
have a LARGE customer with several MS reps on site, and they were
running around disabling the hyper threading on all the 2k
servers.......
The funny thing is several models of HP and Dell are coming out of the
box with it enabled. So if you open up task mgr on a Dual and see 4
procs you know what happened.
Ron Oglesby
Senior Technical Architect
=3D3D20
RapidApp
Office 312.372.7188
Mobile 312.961.2380
email roglesby@xxxxxxxxxxxx
=3D3D20
-----Original Message-----
From: Nick [mailto:nick@xxxxxxxxxxx]=3D3D20
Sent: Friday, April 04, 2003 10:14 AM
To: thin@xxxxxxxxxxxxx
Cc: Windows2000@xxxxxxxxxxxxx
Subject: [THIN] HyperThreading
Hi All,
Does anyone have expirience of using HyperThreading technology on
Windows2000?
We have server based on Intel 7501 Dual Xeon chipset and the
manufacturer turned on
HyperThreading support in motherboard's BIOS though it isn't recommended
using
HyperThreading with Windows2000 on Intel's site!
Does anyone have real expirience of using this technology on terminal
servers
and whether the real gain of productivity in the multiuser system turns
out from it???
Best Regards, Nick mailto: nick@xxxxxxxxxxx
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